| FEATURES |
| Wide porosity range (0 to 60% sandstone
equivalent) |
| Compensation for borehole diameter
using dual detectors |
| Real-time porosity measurement with
Videologger and Micrologger systems |
| Option of natural gamma for correlation |
| Option of CCL for casing inspection |
| MEASUREMENTS |
| Compensated porosity |
| Raw long-spaced neutron |
| Raw short-spaced neutron |
| Count ratio |
| Natural gamma |
| Casing collar locator |
| APPLICATIONS |
Water
Engineering
Minerals |
Lithology identification
Location of aquifer and aquitard
Shale content
Fracture analysis in coals
Correlation between open and cased-hole logs
Strata correlation between wells |
| OPERATING
CONDITIONS |
| Borehole type |
Open/cased, water-filled (qualitative
measurements are possible in air-filled boreholes) |
| Centralisation |
excentralised with bowspring |
| SPECIFICATIONS |
| Diameter |
60mm |
| Length |
1.94m |
| Weight |
18.8kg |
| Max. temperature |
70ºC (extended range available) |
| Max. pressure |
20MPa (extended range available) |
| Neutron detector type |
2 x 3He proportional counter |
| Source |
120GBq 241Am-Be |
| Range |
0 to 60% apparent sandstone porosity |
| Natural-gamma detector |
50mm x 25mm NaI(Tl) scintillation
crystal (larger sizes available) |
| SALES
INFORMATION |
| Probe |
| 25 019 000 |
Dual neutron probe with source holder
and source transport container |
| 25 020 000 |
includes natural gamma |
| 25 021 000 |
includes natural gamma and CCL |
| Accessories |
| 30 006 000 |
Neutron source (120GBq 241Am-Be) |
| 20 091 000 |
Field neutron calibrator |
| 20 070 000 |
Natural-gamma API calibrator without
source |
| 30 010 000 |
3.7MBq 137Cs source for natural
gamma calibrator |
| 22 020 000 |
Bowspring excentraliser (90 - 180mm) |
| 22 021 000 |
Bowspring excentraliser (180 - 260mm) |
| 22 022 000 |
Bowspring excentraliser (260 - 342mm) |
| 22 023 000 |
Bowspring excentraliser (342 - 472mm) |
